Sash-fastener.



W. CRUST/X.

SASH FASTENER.

- APPLICATION FILED FEB. 7, 1911.

1,?65333. PatentedAug.20,1918..

artotmz 1 s barren srarns PATENT orrion.

WILLIAM GROSTA, OF STAMFORD, CONNECTICUT.

T 0 all whom it may concern:

Be it known that I, WILLIAM CROSTA, a citizen of the United States, residingv at Stamford, in the county of Fairfield, State of Connecticut, have invented" certain new and useful Improvements in Sash-Fasten ers; and I do hereby declare the following to be a, full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates locks.

The object of the invention is to provide an improved form of sash lock by means of which a connection between the upper and lower sashes of a window may be effected, and which when drawn into its locking position, positively and securely sets the sashes into their closed position, so that it is impossible to jimmy the lock without to window or sash 'totally destroying the window sash.

\Vith the above objects in view and such others as may hereinafter appear, my invention will now be fully set forth and described, reference being had to the accompanying drawings.

In the drawings Figure 1 is a side elevation of the mechanism as mounted upon the upper and lower sashes of a window,

Fig. 2 is a rear elevation,

Fig. 3 is a section on line 3.3 of Fig. 2,

Fig. 4; is a perspective view of a part of the mechanism, and

Fig. 5 is a section on line 55 of Fig. 2.

Referring more particularly to the drawings, 1 represents a base plate which is adapted to be mounted upon the lower sash of a window, and :2 represents a companion base plate adapted to be mounted upon the upper sash. Suitably mounted upon the base plate 1 is a vertical tubular standard 3 which is vertically slotted throughout its length at the rear, side thereof. 'Pivotally mounted within the standard 3, at its 'upper end, upon a transverse spindle l, is a rock block 5. Said rock block 5 is formed in front of the spindle 4 into a pair of yoke arms 6 which terminate in the fingers 7, the latter being spaced apart a suflicient distance to form a guide for a threaded bolt 8 which is vertically slotted on its transverse diameter to receive the fingers 7, the bolt thereby having a certain vertical movement. relative to the block 5 and the standard 3} of the invention. For instance,

SASI-I-FASTENER;

The bolt 8 is threaded substantially throughout its length, and carries upon its upper end, the correspondinglythreaded nut or head 9 whose lower end is conically shaped or beveled to provide a seat which may;,rest upon the upper face of-the block 5, so that'ro- 'tation of the head 9 upon the bolt Swill cause a vertical reciprocation of the latter. nut 10 also threaded uponthe bolt 8 and adapted to rest upon the top of the head 9 servesto fix the head 'in its various positions of adjustment. The lower end of the bolt 8 is overturned or hooked to provide the locking head 11, the latter being adapted to engage within or below which is centrally formed or secured upon the base plate 2 of the upper sash.. The keeper 12 may be mounted in any suitable manner upon the base plate 2, and is so located that the bolt .8 may be swung outwardly through the slotted side of the standard 3 and engaged therewith after "which.

the head 9 may be rotated to draw the bolt 8 upwardly Within the standard. This action causes the. upper sash to be drawn upwardly tightly into its closed position while the lower sash is thrown dowiiwardly, the throwing action of the bolt 8 also tend ing to draw the abutting. edges of the sashes together.

In order to normally throw the lower, end of the bolt outwardly in position to engage the keeper, a spring 13 is secured to the inner face ofthe standard 3and has a notched portion 11 which is. adapted to engage the rear beveled edge 15 of the block 5, the action of the spring being such as to lock the block 5 upon its spindle 4 so that the lower end of the bolt 8 is turned outwardly.

From the foregoing description, it will be apparentthat I have lock for sashes which it is practically impossible to workloose by means of jim'mys or other instruments which may be inserted between the sashes.

The device not only draws the sashes into their closed position, but also makes allowance for the swelling or shrinkage of the sashes, so that the lock is operated to closethe sashes when they are swelled beyond their normal dimensions, and also to take up the sashes to prevent rattling when there is an undue shrinkage.

.'-Ob'viou'sly, certain details of construction may'be varied without affecting the scope as shown a keeper 1'2,

Patented Aug. 20, 1918. Application filed February 7, 1917. Serial No. 147,167. r

A set provided a positive in Fig. 5 of the drawings, thebolt 8 may be grooved upon opposite sides instead of being provided with a penetrating slotfor the A sash lock, comprising in combination,

a tubular housing mounted on one sash, a looped keeper mounted upon the second sash, a rock block mounted in said housing, a

threaded bolt slidable Within said block and adapted to be rocked laterally of the housing, said housing having a slot through lessees which the bolt may swing upon the block, a head threaded upon the bolt for vertically moving the latter with relation to the housing, a hook upon the lower end of the bolt for engaging the keeper, and a resilieht means for normally throwing the bolt out- Wardly from the housing into the path of the keeper.

In testimony whereof, I aflix my signature, in the presence of two Witnesses.

WILLIAM CROSTA,

Witnesses GEORGE B. Cross, MABEL E. JnNKiNs, 

